There were 80 apples and lemons in a stall at first. After
16 of the apples and
12 of the lemons were sold, there were a total of 58 apples and lemons now. How many apples were there at first?
|
Apples |
Lemons |
Total |
Before |
6 u |
2 p |
80 |
Change |
- 1 u |
- 1 p |
- 22 |
After |
5 u |
1 p |
58 |
Total number of apples and lemons sold
= 80 - 58
= 22
5 u + 1 p = 58
1 p = 58 - 5 u --- (1)
1 u + 1 p = 22
1 p = 22 - 1 u --- (2)
(2) = (1)
22 - 1 u = 58 - 5 u
5 u - 1 u = 58 - 22
4 u = 36
1 u = 36 ÷ 4 = 9
Number of apples at first
= 6 u
= 6 x 9
= 54
Answer(s): 54